Sony's MDR-1A is the successor to the discontinued, a "premium" over-ear that we liked a lot when we reviewed it a few years ago.
That earlier model was known for being extremely comfortable, and the very similar looking 1A, which costs $300 (£170 UK, AU$400), is even more so, thanks to some small design changes. First, its earcup design is subtly different, with softer padding and cushions that are slightly angled to conform to your head better. The finish on the MDR-1A is also a bit more textured (stippled). It's a minor detail, but I did like it slightly better, but others may prefer the smooth finish of the MDR-1R.
One of the biggest design changes is that the MDR-1A's earcups rotate in an opposite direction from the MDR-1R's. That's a big deal because the headphones can now rest flat (pads down) against your clavicles when you have them sitting on your neck. In other words, they feel a lot more comfortable when you're wearing them around your neck and not listening to them.
At 7.94 ounces (225 grams) without the cable attached, the MDR-1A is also slightly lighter than the MDR-1R (240 grams), which was already considered lightweight for an over-ear model. The headphone fits snugly but not too snugly and should fit a variety of head sizes well.
The other small design change is to the cable connector on the headphones. On the MDR-1A, the base of the connector is plated with a gold ring. No such ring exists on the MDR-1R.
In terms of accessories, you get two standard length 1.2-meter cables, one of which has a one-button inline remote and microphone. It's geared toward Android phones but also works with iPhones, though in a more limited capacity (no volume controls). If you have Android phone, you can use the free SmartKey app to customize the button controls.
A decent carrying pouch is also included and Sony also sells three optional higher end cables for this headphone if you want to try to eke out even better sound.